"Those who disbelieve and hinder men from the way of Allah -
He renders their works vain."

"But as for those who believe and do good works and believe in
that which has been revealed to Muhammad - and it is the truth from
their Lord - He removes from them their sins and improves their condition."

"That is because those who disbelieve follow falsehood while
those who believe follow the truth from their Lord. Thus does Allah
set forth for men their similitudes." (47:1-4)